[1] Tokushima Univ, Grad Sch Hlth Sci, Tokushima, Japan
[2] Natl Univ, Coll Allied Hlth, Dept Nursing, 551 MF Jhocson St, Manila 1008, Philippines
[3] San Beda Univ, Coll Nursing, Manila, Philippines
[4] Tokushima Univ, Inst Biomed Sci, Dept Nursing, Tokushima, Japan
[5] Silliman Univ, Coll Nursing, Dumaguete, Philippines